Milwaukee C66, EC meter waterproof
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Milwaukee C66, EC meter waterproof
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EC meters
An EC meter measures electrical conductivity to help you track dissolved salts in nutrient water. Choose a pen or measuring wand for your reservoir, or a substrate meter for the root zone. We help you compare measurement methods, range and maintenance with meters from Bluelab, Milwaukee, Hanna and Aqua Master Tools.
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Bluelab | Truncheon Nutrient Meter | EC meter
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De Bluelab Truncheon Nutrient Meter is dé originele en wereldwijd vertrouwde standaard voor het nauwkeurig meten van voedingswaarden in voedingsoplossingen. Deze robuuste EC-meter geeft snel
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Bluelab | Pulse Multimedia EC/MC Meter | 3 in 1
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De Bluelab Pulse Multimedia EC/MC Meter is dé slimme oplossing voor kwekers die maximale controle willen over de wortelzone van hun planten. Meet eenvoudig en
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Bluelab | EC pen | EC Meter
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De Bluelab EC Pen is een nauwkeurige en betrouwbare meter voor het meten van EC (elektrische geleidbaarheid) en temperatuur in voedingsoplossingen. Met deze compacte handheld
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Aquamaster Tools | E300 pro | Substraat EC en TEMP meter
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De Aqua Master Tools E300 Pro is een betrouwbare en nauwkeurige EC- en temperatuurmeter voor zachte substraten zoals aarde, kokos en steenwol. Deze gebruiksvriendelijke meter
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Compare EC meters for nutrient solution
| Feature | Milwaukee C66 | Bluelab EC Pen | Bluelab Truncheon |
|---|---|---|---|
| EC range (mS/cm) | 0.00–10.00 | 0.0–10.0 | 0.2–3.6 |
| EC resolution (mS/cm) | 0.01 | 0.1 | 0.1 |
| Readout | Digital display | Backlit display | LED scale |
| Temperature readout | No | Yes | No |
Nutrient solution or substrate: choose the measurement method
Checking your nutrient reservoir? Choose a meter for liquids. The Milwaukee C66 is a compact conductivity pen. The Bluelab EC Pen also displays temperature. The Bluelab Truncheon shows conductivity with LEDs along its measuring wand.
Measuring directly in the root zone? The Hanna HI98331 uses a penetration probe for soil. The Aqua Master Tools E300 Pro measures EC and temperature with a separate probe in soft, moist substrate. The Bluelab Pulse combines EC, moisture content and temperature with readings in the Pulse app.
Direct substrate readings, runoff measurements and freshly mixed nutrient solution each tell you something different. Compare results using the same method under similar conditions. Need pH as well? Explore our pH and EC meters.
Take useful nutrient water readings
Measure your source water first. Add nutrients using the appropriate feeding schedule, mix thoroughly and measure again once the reading settles. Record EC, water temperature and the mixing ratio so you can compare successive batches.
EC responds to dissolved salts. It cannot tell you the amount of nitrogen, phosphorus or potassium individually, or give a complete picture of organic nutrients. Use it alongside your feeding schedule and plant condition. Read why measuring both pH and EC matters.
Clean, check and calibrate correctly
Nutrient residue on the sensor can affect readings. Rinse the probe after use and clean it with materials suitable for the model. Allow the probe and liquid temperature to settle and wait for a stable reading, even with automatic temperature compensation.
The Truncheon is factory calibrated: you do not calibrate it yourself, but check its clean sensor with 2.77 EC standard solution. The C66, HI98331 and E300 Pro have their own calibration procedures. Select EC calibration solution with the correct reference value for your meter; pH buffer cannot replace it.
Nutrient water and feeding advice
All plant nutrition guides
Plant nutrition 2 minBase nutrients, boosters and enzymes: what is the difference?Nutrient bottles do not all serve the same purpose.
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Plant nutrition 2 minDosing plant nutrients: convert ml per litre to your water volumeFeeding schedules often give millilitres per litre.
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Plant nutrition 2 minChoosing plant nutrients for soil, coco or hydroA suitable feeding programme starts with your growing medium.
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EC meter questions
Which EC meter suits your growing setup?
Tell us what you need to measure: nutrient solution, runoff or moist substrate. We can help you choose a suitable meter and calibration solution for your application.
Nutrient solution or direct substrate readings
Measurement range and readability
Calibration, care and additional measurements
